The air conditioning and refrigerating systems can be contaminated by micro-organisms (bacteria, mould, algae…).
The development of these micro-organisms is mainly caused by:
warm water (20°C to 45°C);
nutriments in sufficient amount (for instance, the iron salts produced by corrosion);
the accumulation of organic materials, sediments and other micro-organisms.
A large part of these micro-organisms can be dispersed in the system by water coming from a condensation or de-icing system. Thus they can damage piping, heat exchangers and other surfaces by forming bio-films.
The Legionella Pneumophilia bacterium is a micro-organism that can cause severe infections to man.
The water contaminated by the Legionella presents a risk for health when it is dispersed in the air and inhaled by man.
Use biocides safely. Always read the label and product information before use.